The game suddenly appeared in my wishlist. I can swear that I didn't add it (nor could I, because it was delisted several years ago). Still, the store page doesn't exist, What kind of trickery is this? Is it coming back?

My wishlist broke as well, with games I already own, tens of pre-orders and some removed games. Makes no sense.

And now it disappeared from the wishlist... Damn, that was a suсker punch. Probably, the store bugged due to a massive sale.

Sadly, it looks like a server derp. The Riddick games are in legal hell as the licence expired. Atari was the only publisher. Even if somebody else reaquires the Riddick licence, they will be the corporate 4holes like they are, and fight it till the end of times to "protect" their source code and other BS. I might be wrong, but the guts tell otherwise. I haven't even mentioned the fact that Universal Pictures hold the IP rights, which is a financial black hole on its own. Don't want to promote piracy or anything similar, but for this one i wouldn't feel bad at all getting it from "other" sources, if i hadn't already bought it on GOG :/. Cheers

Vin Diesel owns the IP rights. He got them in exchange for doing the cameo in F&F3: Tokyo Drift. He wanted to make more Riddick movies but Universal didn't. Additionally, he owns Tigon studios who developed all the games he's been in. I couldn't tell you if there would be any hassle with the publishers, however. I imagine Vin could do something...
Maybe tweeting at him could make him aware of this issue? He wants to make more games anyways:
https://www.gamespot.com/articles/vin-diesel-talks-new-riddick-game-possibility/1100-6493315/?ftag=ftag%3DGSS-05-10aab8e&ServiceType=twitter&TheTime=2021-06-28T17%3A01%3A02&UniqueID=6B8B5F84-D832-11EB-9E80-F0EFBDCD475E&PostType=image

Vin Diesel always seemed a cool guy to me, I think he'd be very reasonable if anybody was able to contact him.
He's also a long time DnD player (to almost nerdy levels) and not ashamed to say it, respect!